Dang, Huyen, Thuy Hoang, and Phong Trinh. 2014. “Groundwater Reserve and Capacity of Groundwater Extraction for Ilmenite Placer Mining in Ninh Thuan Province”. Science and Technology Development Journal 17 (3), 34-39. https://doi.org/https://doi.org/10.32508/stdj.v17i3.1459.